The State’s Attorney’s Office said the "investigative responsibilities" for a shooting in Franklin Park would rest with the Franklin Park Police Department.

Albert Alschuler, a professor emeritus at the University of Chicago Law School, said that while it would be unusual for the State’s Attorney’s Office to initiate an investigation, he would be "surprised if there’s any legal restraint" barring them from doing so. 

Typically, local law enforcement agencies conduct investigations and then present their findings to the state’s attorney’s office to make charging decisions, Alschuler said. The Cook County State’s Attorney’s Office could have called the Franklin Park Police Department and asked if they would cooperate with them on an investigation, Alschuler said.

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